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Glass Forming Ability, Magnetic Properties, and Mechanical Behavior of Iron-Based and Cobalt-Based Metallic Glasses

Description: Lack of crystalline order and microstructural features such as grain/grain-boundary in metallic glasses results in a suite of remarkable attributes including very high strength, close to theoretical elasticity, high corrosion and wear resistance, and soft magnetic properties. In particular, low coercivity and high permeability of iron and cobalt based metallic glass compositions could potentially lead to extensive commercial use as magnetic heads, transformer cores, circuits and magnetic shield… more
Date: December 2014
Creator: Veligatla, Medha
Item Type: Refine your search to only Thesis or Dissertation
open access

The Role of the Actin Cytoskeleton in Asymmetric Cell Division in Maize

Description: Stomata are specialized plant structures required for gaseous exchange with the outer environment. During stomata formation, the cytoskeleton plays an important role in controlling the division of the individual cells leading to the generation of the stomata complex. Two mutants that affect microfilament and microtubule organization in subsidiary mother cells include brk1 and dcd1. While only 20% of the subsidiary cells in the brk1 and dcd1 single mutants are abnormally shaped, it was reported… more
Date: August 2014
Creator: Alhassan, Hassan Hamdan
Item Type: Refine your search to only Thesis or Dissertation
open access

The Effects of Model Prompts on Joint Attention Initiations in Children with Autism

Description: The general purpose of the current study was to evaluate the effects of minimally intrusive prompting procedures and preferred stimuli on protodeclarative joint attention initiations in children diagnosed with autism spectrum disorder (ASD). Two boys and one girl diagnosed with ASD participated. The experimenter provided attention and social interaction following protodeclarative initiations throughout all phases of the study. During intervention, a model prompt was delivered every 30 s if the … more
Date: December 2014
Creator: James-Kelly, Kimberly L.
Item Type: Refine your search to only Thesis or Dissertation
open access

An Application of Digital Video Recording and Off-grid Technology to Burrowing Owl Conservation Research

Description: Through this research, engineering students and conservation biologists constructed an off-grid video system for observing western burrowing owls in El Paso, Texas. The burrowing owl has a declining population and their range decreasing, driving scientists' interest to see inside the den for observing critical nesting behavior. Texas Parks and Wildlife Department (TPWD) biologists wanted videos from inside the dark, isolated hillside owl burrows. This research yielded a replicable multi-camera … more
Date: August 2014
Creator: Williams, Jennifer M.
Item Type: Refine your search to only Thesis or Dissertation
open access

Electrodepostion of Iron Oxide on Steel Fiber for Improved Pullout Strength in Concrete

Description: Fiber-reinforced concrete (FRC) is nowadays extensively used in civil engineering throughout the world due to the composites of FRC can improve the toughness, flexural strength, tensile strength, and impact strength as well as the failure mode of the concrete. It is an easy crazed material compared to others materials in civil engineering. Concrete, like glass, is brittle, and hence has a low tensile strength and shear capacity. At present, there are different materials that have been employed … more
Date: August 2014
Creator: Liu, Chuangwei
Item Type: Refine your search to only Thesis or Dissertation
open access

High-Density Polyethylene/Peanut Shell Biocomposites

Description: A recent trend in the development of renewable and biodegradable materials has led to the development of composites from renewal sources such as natural fibers. This agricultural activity generates a large amount of waste in the form of peanut shells. The motivation for this research is based on the utilization of peanut shells as a viable source for the manufacture of biocomposites. High-density polyethylene (HDPE) is a plastic largely used in the industry due to its durability, high strength … more
Date: May 2014
Creator: Londoño Ceballos, Mauricio
Item Type: Refine your search to only Thesis or Dissertation
open access

Determinants and Impacts of Pinterest Consumer Experiences

Description: Pinterest is one of the fastest growing social networking sites and is attracting the interest of retailers as an effective way to interact with consumers. The purpose of this study was to examine: 1) determinants and impacts of Pinterest consumer experiences. Specifically, this study examined the impacts of retailer reputation, trust, perceived ease of use, and perceived usefulness on Pinterest consumer experiences on retailer SNS. 2) To identify the impacts of Pinterest consumer experiences o… more
Date: December 2014
Creator: Vasquez, Lauren
Item Type: Refine your search to only Thesis or Dissertation
open access

“Madness” in the Media: How Can Print Journalists Better Report on Mental Illnesses?

Description: Stereo types and stigmas of individuals with mental illnesses have proved to be a major roadblock preventing these individuals from seeking help. The news media, despite having a responsibility to accurately inform the public, has played a significant role in portraying individuals with mental illness as violent, unpredictable, dangerous, and unfit to live with the rest of “normal” society. This happens through the words journalists choose to use and the information they choose in included, and… more
Date: August 2014
Creator: Cousineau, Anna Desiree
Item Type: Refine your search to only Thesis or Dissertation
open access

"Stealing Dreams" and Other Stories

Description: The critical preface, "Learning to Break the Rules" discusses workshop rules as guidelines, as well as how and why I learned to break them. The creative portion of this thesis is made up of eight short stories: "The Many Incarnations of Blazer Chief," "Anna's Monsters," "The Pecan Tree's Daughter," "When the Seas Emptied," "The Umbrella Thief," "How to Forget," "Fracture," and "Stealing Dreams."
Date: December 2014
Creator: Matthews, Elise
Item Type: Refine your search to only Thesis or Dissertation
open access

Assessment of Post-earthquake Building Damage Using High-resolution Satellite Images and LiDAR Data - a Case Study From Port-au-prince, Haiti

Description: When an earthquake happens, one of the most important tasks of disaster managers is to conduct damage assessment; this is mostly done from remotely sensed data. This study presents a new method for building detection and damage assessment using high-resolution satellite images and LiDAR data from Port-au-Prince, Haiti. A graph-cut method is used for building detection due to its advantages compared to traditional methods such as the Hough transform. Results of two methods are compared to unders… more
Date: August 2014
Creator: Koohikamali, Mehrdad
Item Type: Refine your search to only Thesis or Dissertation
open access

Networking and Decentralized Control in Layered Networks: a Theoretical Study and Test-bed Development

Description: Layered structures are commonly used in communication systems, but their roles in decentralized control are not understood well. In the first part of this thesis, a theoretical study of consensus (a typical decentralized control task) in layered structures is conducted. The unique graph topology approach permits explicit characterization of consensus performance based on simple graphical characteristics of MLMG structures. In the second part of this thesis, a generic LEGO test-bed to mimic mult… more
Date: December 2014
Creator: Sheth, Vardhman Jayeshkumar
Item Type: Refine your search to only Thesis or Dissertation
open access

Youth-led Environmental Awareness: Initiatives Towards a Jain Faith Community Empowerment

Description: This project employs participatory action research methods in efforts to create a community specific environmental curriculum for the high school age youth at the only Jain faith community in the North Texas region. Aligned with the community’s goals, the youth led in deciding, creating, and carrying out initiatives that were aimed at increasing the level of awareness about environmental issues amongst community members. The research done by the youth aimed at looking at environmental issues th… more
Date: August 2014
Creator: Otterbine, Joseph R.
Item Type: Refine your search to only Thesis or Dissertation
open access

The Evaluation of Task Preference on Reinforcer Efficacy

Description: Stimulus preference assessments have determined high and low preferred items that increase the rate of frequency of responding for various skills. Within applied settings, high preferred items may not attain the same reinforcing value across tasks which might decrease responding. The preference of the task might have an effect on reinforcer efficacy that is being presented. The purpose of the current study is to evaluate changes in reinforcer efficacy as a function of preference for the task. T… more
Date: December 2014
Creator: Lowery, Wesley J.
Item Type: Refine your search to only Thesis or Dissertation
open access

What Is Needed to Enable a Cultural Shift in the Market Research Department at the Gangler Company?

Description: This thesis investigates how to create an environment for organizational change within the Market Research Department at the Gangler Company (a US-based consumer products company). I explore what is influencing the current cultural environment and which of those influencers can be shifted to encourage organizational change toward the “ideal” culture that the organization has identified. Using new institutionalism as the theoretical approach, I discuss the significance of institutional forces (s… more
Date: December 2014
Creator: Davis, Brooke
Item Type: Refine your search to only Thesis or Dissertation
open access

The Influence of Surface Roughness and Its Geometry on Dynamic Behavior of Water Droplets

Description: In this study the author reports the effects of surface roughness on dynamic behavior of water droplets on different types of rough structures. First, the influence of roughness geometry on the Wenzel/ Cassie-Baxter transition of water droplets on one-tier (solid substrates with Si micropillars) surfaces is studied (Chapter 3). In order to address distinct wetting behaviors of the advancing and receding motions, the author investigates the Wenzel/ Cassie-Baxter transition of water droplets on o… more
Date: December 2014
Creator: Sadeghpour, Nima.
Item Type: Refine your search to only Thesis or Dissertation
open access

Factors That Influence Athletic Trainers’ Ability to Recognize, Diagnose, and Intervene: Depression in Athletes

Description: Athletic trainers (ATs) are professionals who are most directly responsible for athletes’ health care in a sport environment. ATs work with athletes on prevention, diagnosis, and treatment of athletic injury; it is through these interactions that put ATs in an ideal position to recognize the psychological and emotional distress that athletes may suffer. Consequently, the National Athletic Trainer’s Association (NATA) has called for ATs to be competent in implementing psychosocial strategies a… more
Date: August 2014
Creator: Nguyen, Thomas TN
Item Type: Refine your search to only Thesis or Dissertation
open access

Exotic Femininity: Prostitution Reviews and the Sexual Stereotyping of Asian Women

Description: Studies on prostitution have typically focused on the experiences, problems, and histories of prostitutes, rather than examining men who seek to purchase sex. Race has also been overlooked as a central factor in shaping the sex industry and the motivations of men who seek to purchase sex. This study utilizes online reviews of prostitutes to examine the way men who purchase sex discuss Asian prostitutes in comparison to White prostitutes. This paper traces the history of colonialism and ideas of… more
Date: December 2014
Creator: Dougherty, Devyn T.
Item Type: Refine your search to only Thesis or Dissertation
open access

Evaluating the Role of Design in the Apparel Industry in the United States

Description: The purpose of this study was to better understand the role of design in the product development process in the apparel industry in the United States, looking for variations in how design is used in the industry. In order to obtain a snapshot of the fashion design industry, creativity, originality, innovation, and product development were examined, as well as corporate culture and strategic orientation. The study also sought to examine pedagogical strategies based on these findings. A mixed met… more
Date: August 2014
Creator: Beard, Diana
Item Type: Refine your search to only Thesis or Dissertation
open access

Microchannel Radiator: an Investigation of Microchannel Technology with Applications in Automotive Radiator Heat Exchangers

Description: Microchannels have been used in electronics cooling and in air conditioning applications as condensers. Little study has been made in the application of microchannels in automotive heat exchangers, particularly the radiator. The presented research captures the need for the design improvement of radiator heat exchangers in heavy-duty vehicles in order to reduce aerodynamic drag and improve fuel economy. A method for analyzing an existing radiator is set forth including the needed parameters for … more
Date: August 2014
Creator: Checketts, Gus Thomas
Item Type: Refine your search to only Thesis or Dissertation
open access

Regulation of Alternative Sigma Factors During Oxidative and Ph Stresses in the Phototroph Rhodopseudomonas Palustris

Description: Rhodopseudomonas palustris is a metabolically versatile phototrophic α-proteobacterium. The organism experiences a wide range of stresses in its environment and during metabolism. The oxidative an pH stresses of four ECF (extracytoplasmic function) σ-factors are investigated. Three of these, σ0550, σ1813, and σ1819 show responses to light-generated singlet oxygen and respiration-generated superoxide reactive oxygen species (ROS). The EcfG homolog, σ4225, shows a high response to superoxide and … more
Date: August 2014
Creator: Perry, Leslie M.
Item Type: Refine your search to only Thesis or Dissertation
open access

Optimal Sensor Placement for Structural Health Monitoring

Description: In large-scale civil structures, a limited number of sensors are placed to monitor the health of civil structures to reduce maintenance, communication and energy costs. In this thesis, the problem of optimal sensor location placement to infer the health of civil structures is explored. First, a comparative study of approaches from the fields of control engineering and civil engineering is conducted . The widely used civil engineering approaches such as effective independence (EI) and modal assu… more
Date: December 2014
Creator: Movva, Gopichand
Item Type: Refine your search to only Thesis or Dissertation
open access

“Before I Die…”: Original Composition with a Critical Essay Exploring the Techniques of Six Crossover Composers

Description: Candy Chang developed a public art installation where people are given the opportunity to write their answers to "Before I Die I want to ________." in a public space. I created one of these walls in Denton, TX and set it to music in a 12 minutes and 42 second piece titled Before I Die..., which combines elements of South Indian carnatic music, gospel, R&B, jazz fusion, and minimalism. The composition was influenced by the music of several crossover artists Becca Stevens, Michael League (Snarky … more
Date: August 2014
Creator: Trusko, Robert
Item Type: Refine your search to only Thesis or Dissertation
open access

Analytical Model for Lateral Deflection in Cold-formed Steel Framed Shear Walls with Steel Sheathing

Description: An analytical model for lateral deflection in cold-formed steel shear walls sheathed with steel is developed in this research. The model is based on the four factors: fastener displacement, steel sheet deformation, and hold-down deformation, which are from the effective strip concept and a complexity factor, which accounts for the additional influential factors not considered in the previous three terms. The model uses design equations based on the actual material and mechanical properties of t… more
Date: December 2014
Creator: Yousof, Mohamad
Item Type: Refine your search to only Thesis or Dissertation
open access

Development and Evaluation of a Large-scale Pyramidal Staff Training Program for Behavior Management

Description: Training and empirically evaluating caregivers’ implementation of behavior management skills is a particularly challenging task in large residential contexts. A pyramidal training approach provides an efficient and effective way to conduct large-scale competency-based behavior skills training. The purpose of this project was to develop and evaluate a large-scale pyramidal staff training program for behavior management skills. One hundred nine caregivers and 11 behavior service professionals at… more
Date: August 2014
Creator: Shivers, Audrey H.
Item Type: Refine your search to only Thesis or Dissertation
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